Which of the following cannot be shown on a production possibilities graph? a. growth b. scarcity c. efficiency d. opportunity cost

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

The discovery of the electron as a subatomic particle was a result of

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db